When you speak to your partner or kids, do you use a different way of speaking? What about when you speak to your boss at work? We all tend to modify our language depending on to whom we are speaking. However, certain fields of work have their own vocabularies and may require greater clarity than other speaking or writing.
Business english is the language we use when conducting business. It is important to be clear in what we say or write so that there is no room for misinterpreting the language. It is best not to use informal language, Clichés, slang and so on, as the meaning of these is open to different interpretations.
When I was a lawyer, if a client wanted me to write a letter to another party on his or her behalf, I would ask if they wanted a long letter or a short letter, with the short one costing more because it required more work to condense the word count to use just as many words as needed to get the message across. Don’t use 2 words when 1 will do. Business letters are not aiming to win literature prizes.